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Bioactive oligopeptides in dermatology: Part I
The Nanjing University Institutional Animal Ethics Committee granted approval for all animal experiments
For the chronic dosing studies, most studies are looking at doses of 4 g/day.[ref] (This used to be the maximum recommended acetaminophen dose per day, but that has now changed to 3g/day.) For reference, a single over-the-counter Extra Strength Tylenol is 500 mg, with the directions saying not to exceed 6 tablets in 24 hours (so 3g/day)
A study by Xiao et al (2013) clearly associated people aged between 40-85 years old following long-term diets high in animal proteins (a rich source of methionine) with a higher risk of hyperhomocysteinemia, the reverse being true for diets that include a high consumption of plant foods (Xiao et al, 2013)
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